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Post by kcatthedog on Jan 28, 2016 16:05:36 GMT -6
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Post by WKG on Jan 28, 2016 16:18:45 GMT -6
I always thought GIK's GridFusor looked like a reasonably priced option.
Anybody used them? |
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Post by Martin John Butler on Jan 28, 2016 21:31:36 GMT -6
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Post by keymod on Jan 29, 2016 4:28:02 GMT -6
The DIY diffusers shown on the Argen site, linked to from that other purple place, are beautiful. I just asked to have the blueprints sent to me. Might give it a go. Lot's of nice info on that Argen site.
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Post by Deleted on Jan 29, 2016 15:32:32 GMT -6
I heard of people using the type of styrofoam diffusers. Generally, yes - they work as intended. But - not very durable at all. it is just styrofoam. You can paint it to look slightly better - and just better never touch again, because they are not durable at all, as i said before... Be prepared to get them packaged together with all those staticly loaded small styrofoam particles that easily surround everything made of styrofoam from factory... Btw, the "big T" in europe sells this stuff at much easier to accept and more realistic pricing. www.thomann.de/de/the_takustik_diffusor_skyline_eps_set.htmwww.thomann.de/de/the_takustik_wds7_diffusor_8erset.htmSo it's possible to sell them for a fractal (:-)) of the pricing. I wonder if noone in the US is willing to sell them at more realistic pricing as generic non-branded stuff. (I still can't get the 500 dollar styrofoam diffusers, these are most probably nothin else but the ones in my first link,...) (The first pricing is for 2 of those skyline diffusers, the second for 8x the shown diffusers.) |
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Post by Deleted on Jan 29, 2016 15:48:50 GMT -6
(We once treated a rehearsal room with polyurethane foam pieces used as absorbers, salvaged from the garbage container of a factory, the room was dead quiet at the cost of nothing...)
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Post by swurveman on Jan 30, 2016 12:08:33 GMT -6
The DIY diffusers shown on the Argen site, linked to from that other purple place, are beautiful. I just asked to have the blueprints sent to me. Might give it a go. Lot's of nice info on that Argen site. This analysis (below) says the Argen diffusor doesn't scatter anything under 350 Hz. However, I've read that diffusion under 400hz is unnecessary and creates too much mud . So, I don't really know what to believe. Being this inexpensive, maybe it makes sense to buy 3 and put them on my back wall panels to see if there's a discernible improvement to the sound of my room..  |
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Post by jazznoise on Jan 30, 2016 12:42:00 GMT -6
The well depth and distances required for proper diffusion in the low mids (<500 Hz) is simply not worth it. My 1Khz diffuser scatters down to 500Hz by nature, but the problems at that range are generally more modal and less to do with comb filtering from ER's.
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Post by kcatthedog on Jan 30, 2016 13:18:01 GMT -6
I guess below 500 it's a function the increasing wave height (trough to peak) and building a diffuser deep enough would work bet you 'd have no room left ?  So bass traps instead ? |
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Post by drbill on Jan 30, 2016 14:09:48 GMT -6
There are products you can purchase, and/or wall treatments that you can fabricate cheaply (depending on whether MDF or Exotic Hardwood is your preference) that can do BOTH LF absorption and HF/MF scattering. It's not difficult, but best to consult with an acoustician like Jeff H so that you're not "redoing" things and moving them around constantly in search of perfection. There's a high degree of math involved.
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Post by jazznoise on Jan 30, 2016 14:46:40 GMT -6
There are products you can purchase, and/or wall treatments that you can fabricate cheaply (depending on whether MDF or Exotic Hardwood is your preference) that can do BOTH LF absorption and HF/MF scattering. It's not difficult, but best to consult with an acoustician like Jeff H so that you're not "redoing" things and moving them around constantly in search of perfection. There's a high degree of math involved. I've thought of 3d printing diffusers and a matching rear pannel, then stuffing the insides with rock wool. Could be very light, have very high HF scattering plus decent absorption. |
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Post by kcatthedog on Jan 30, 2016 15:06:22 GMT -6
^^ yes please^^, can I order some ? the skyline pattern I think is lifted form the BBC product that is not copy written any longer or never was, so the pattern is in the public domain. |
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Post by tonycamphd on Jan 30, 2016 16:19:20 GMT -6
all things being equal, you're not going to get "mud" by diffusing any frequency, what you'll get is a smoother frequency response everywhere in the room, if you have modes and anti modes in the lower range, they need to be dealt with however you can, and that usually means broadband trapping as the wells of diffusors would have to be so deep you'd end up having no space left to move around in your room, i think 25Hz is 53 feet long or something.. haha I believe the panels dr. bill is talking about are called BAD panels (binary absorber diffusors), they are moderately easy to build yourself, i have giant paper printouts that i made with different hole sizes, the bigger the holes.. the more the absorption and the lower Hz they diffuse, the problem with them if you don't DIY, is you can only buy them from RGP as they own the patent, quite $teep. Diy'ing is best done by cutting out your MULTIPLE tempered hardboard pieces at the appropriate size, and then stacking them before placing (by tape) your giant printout to the top piece, THEN drilling what's gotta be at least 300 holes through about 15 pieces at a time, makes a lot of work pay off with quantity....much quicker, inverses are still need, so keep that in mind to avoid lobeing. Basically all you do is build a regular 2-4" deep absorber, then glue and nail one of these panels to the front of it. the tools you need are.... 1. a good drill 2. clamps or make a 2x3 box to keep the tempered pieces square and stable for drilling 3. this4. spade bits of appropriate size. 5. a printout of the size you want of this (public from the patent)...  Good luck.... |
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Post by Martin John Butler on Jan 30, 2016 17:42:38 GMT -6
Yikes. For a guy in a rental apartment, I couldn't even entertain some of these interesting projects. When I finally do get in a position to have my own space, I think I'd find a studio where I loved the sound quality and try to emulate the design style. At the very least, I'd find an expert who likes that same style and sound design as a consultant before doing anything.
There are some highly different, occasionally conflicting and complicated ideas and theories, that are a lot for me to take in, so I think finding a sound somewhere you like as a reference first might be a good idea.
I really like the modern style of those clouds above the mixing area.
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